The filter media in these air cleaners neutralizes odors and traps airborne particles as air passes through the air cleaners. Also known as furnace air cleaners, media air cleaners help capture airborne particles released by the building's furnace. These air cleaners install into the return air duct of a forced-air HVAC system, and the system must be running to move air through the air cleaners.

The UV-C bulbs in these air cleaners reduce viruses, mold, and bacteria in the air that moves past the bulbs. The air cleaners install into the main supply or return air duct of a forced-air HVAC system. They can operate continuously, but they require the HVAC system to be running to move air past the bulbs. These air cleaners can also be installed near the HVAC system's A-coil to prevent mold and bacteria from growing on the A-coil and maintain the efficiency of the system's air conditioning.

These in-duct air cleaners use photocatalytic oxidation (PCO) filter media to neutralize volatile organic compounds (VOCs) and other gaseous pollutants in the air that moves through the air cleaners. They also have UV-C bulbs that reduce airborne viruses, mold, and bacteria. PCO in-duct air cleaners install into the main supply or return air duct of a forced-air HVAC system. They can operate continuously, but they require the HVAC system to be running to move air through the filters and past the bulbs. The cleaners can also be placed near the HVAC system's A-coil to prevent mold and bacteria from growing on the A-coil and maintain the efficiency of the system's air conditioning.